MULTIFUNCTIONAL THERMO-MICROWAVE IMAGER Russian patent published in 1999 - IPC

FIELD: measurement of holographic parameters, electromagnetic and thermal radiation of object in specific range with high degree of sensitivity and resolving power. SUBSTANCE: multifunctional thermo-microwave imager has reception channel incorporating master generator, amplifier, transmitting antenna and reception channel including mixer, switch, low-frequency amplifier, quadrature detector and receiving antenna. Transmitting and receiving channels are connected via coupling elements to computer. There are inserted additional receiving channels and antenna. Transmitting channel has brightening generator which output is connected to radiating antenna and controller, superhigh-frequency synchronization unit and master generator are connected to inputs. Input of controller is connected via coupling elements to computer and outputs are connected to input of master generator, to SHF synchronization unit, to heterodyne and low-frequency control bus. Outputs of SHF synchronization unit are connected to input of master generator and input of amplifier, another output of master generator is connected to heterodyne, amplifier and multichannel power divider connected in series. Each receiving channel is inserted with switch connected to receiving antenna, source of noise signal and second input of mixer whose first input is connected to multifunctional power divider of transmitting channel. First network includes amplifier of intermediate frequency, quadrature detector and first synchronizing detector connected in series, second network incorporates low-frequency amplifier and second synchronizing detector connected in series. Imager also has analog-to-digital converter whose inputs are connected via first and second networks to output of mixer and whose output is connected to computer via coupling elements, low-frequency synchronizing unit whose outputs are connected to switch, input of first and second synchronizing detectors and whose input is connected via low-frequency control bus to controller of transmitting channel. Receiving antennas are manufactured in the form of monoblock and are located in focus of additional antenna made in the form of reflector-type antenna. EFFECT: provision for high-degree of sensitivity and resolving power. 7 cl, 2 dwg